var startY = 0;
let that = this;
document.addEventListener("touchstart",function(e){
startY = e.changedTouches[0].pageY;
},false);
document.addEventListener("touchmove",function(e){
var endY = e.changedTouches[0].pageY;
var changeVal = endY - startY;
if(endY < startY){//向上滑
//console.log("向上滑");
that.showSearchFlag = false
}else if(endY > startY){//向下滑
//console.log("向下滑");
that.showSearchFlag = true
}else{
//console.log("没有偏移");
}
// 获取屏幕高度
var a = document.body.scrollTop || document.documentElement.scrollTop;; //滚动条的高度
var b =document.documentElement.clientHeight //可视区的高度
var c = $('#listIndex').height(); //文档的总高度
if(a+b >= c){
//表示浏览器已经到达最底部
that.showSearchFlag = true
}
},false);